Q 1. The pressure which is exerted by air around us is known as
(a) force
(b) atmospheric pressure
(c) muscular force
(d) friction
Q 2. Force acting on per unit area is called
(a) non-contact forces
(b) contact forces
(c) force
(d) pressure
Q 3. The force exerted by a charged body on another charged or uncharged body is called
(a) gravitational force
(b) electrostatic force
(c) non-contact force
(d) contact force
Q 4. The force exerted by our muscle is called
(a) electrostatic force
(b) muscular force
(c) gravitational force
(d) non-contact force
Q 5. A spring balance is used for measuring
(a) mass
(b) weight
(c) pressure
(d) speed
Q 6. Two boys A and B are applying force on a block. If the block moves towards the boy A, which one of the following statements is correct?
(a) Magnitude of force applied by A is greater than that of B.
(b) Magnitude of force applied by A is smaller than that of B.
(c) Net force on the block is towards B.
(d) Magnitude of force applied by A is equal to that of B.
Q 7. Leaves fall down on the ground due to
(a) electrostatic force
(b) magnetic force
(c) gravitational force
(d) muscular force
Q 8. During dry weather, while combing hair, sometimes we experience hair flying apart. The force responsible for this is
(a) force of gravity
(b) force of friction
(c) electrostatic force
(d) magnetic force
Q 9. A container is filled with water as shown in the given figure. Which of the following statements is correct about pressure of water?
(a) Pressure at A > Pressure at B > Pressure at C
(b) Pressure at A = Pressure at B = Pressure at C
(c) Pressure at A < Pressure at B > Pressure at C
(d) Pressure at A < Pressure at B < Pressure at C
Q 10. Which one of the following forces is a contact force?
(a) Force of gravity
(b) Magnetic force
(c) Force of friction
(d) Electrostatic force
Q 11. Fill in the blanks
- We ___________ the bucket to take out water from well.
- The strength of a force is usually expressed by its ___________.
- ___________ force is the force resulting due to the action of muscles.
- The envelop of air all around us is called ___________.
- To open a door we or ___________ the door.
Q 12. True or false
- Force applied on an object in opposite directions add to one another.
- Pressure does not depend on area of contact.
- A force can change the state of motion of an object.
- Force cannot change the speed of an object.
- Atmospheric pressure is less at higher altitudes.
Q 13. Match the following
Column A | Column B |
1. Gravity | (a) Muscular force |
2. Frictional force | (b) Pascal |
3. Pressure | (c) Strength of force |
4. Magnitude | (d) Earth |
5. Contact force | (e) Contact force |
Q 14. Which force is responsible for downward movement of a parachutes? Will he come down with the same speed without the parachute?
Q 15. Two thermocol balls held close to each other move away from each other. When they are released, name the force which might be responsible for this phenomenon. Explain.
Q 16. Name the forces acting on the car sticking to an electromagnet in a Junkyard. Which one of them is larger?
Q 17. What is force? State the difference between contact force and non-contact force.
Q 18. Define the different types of forces.
Q 19. What is pressure? What is the relation of pressure with area on which it is applied?
Q 20. On Lokesh’s birthday Shreya was given charge to amuse children with some little
Q 21. How does an applied force changes the speed of an object?
Q 22. Define pressure.
Q 23. How do fluids exert pressure?